Camera: Fix missing physical camera availability callback
The missing physical camera availability callback is due to a race
condition between provider enumeration and physical camera availability
callback. If the HAL triggers a physical camera availability callback,
it could be dropped because the logical camera's availability callback
isn't triggered until the provider enumeration finishes.
Fix the issue by deferring physical camera availability callbacks
until the logical camera availability callback is called.
Test: Camera CTS, vendor test on foldable phone, cameraservice_test
Bug: 255472536
Change-Id: Ia5a535b1530b3666e616cc3619fcb759ff5d8560
diff --git a/services/camera/libcameraservice/common/CameraProviderManager.cpp b/services/camera/libcameraservice/common/CameraProviderManager.cpp
index 6ef16b3..0f2100b 100644
--- a/services/camera/libcameraservice/common/CameraProviderManager.cpp
+++ b/services/camera/libcameraservice/common/CameraProviderManager.cpp
@@ -197,12 +197,17 @@
return std::make_pair(systemCameraCount, publicCameraCount);
}
-std::vector<std::string> CameraProviderManager::getCameraDeviceIds() const {
+std::vector<std::string> CameraProviderManager::getCameraDeviceIds(std::unordered_map<
+ std::string, std::set<std::string>>* unavailablePhysicalIds) const {
std::lock_guard<std::mutex> lock(mInterfaceMutex);
std::vector<std::string> deviceIds;
for (auto& provider : mProviders) {
for (auto& id : provider->mUniqueCameraIds) {
deviceIds.push_back(id);
+ if (unavailablePhysicalIds != nullptr &&
+ provider->mUnavailablePhysicalCameras.count(id) > 0) {
+ (*unavailablePhysicalIds)[id] = provider->mUnavailablePhysicalCameras.at(id);
+ }
}
}
return deviceIds;
@@ -839,9 +844,6 @@
void CameraProviderManager::ProviderInfo::initializeProviderInfoCommon(
const std::vector<std::string> &devices) {
-
- sp<StatusListener> listener = mManager->getStatusListener();
-
for (auto& device : devices) {
std::string id;
status_t res = addDevice(device, CameraDeviceStatus::PRESENT, &id);
@@ -856,38 +858,22 @@
mProviderName.c_str(), mDevices.size());
// Process cached status callbacks
- std::unique_ptr<std::vector<CameraStatusInfoT>> cachedStatus =
- std::make_unique<std::vector<CameraStatusInfoT>>();
{
std::lock_guard<std::mutex> lock(mInitLock);
for (auto& statusInfo : mCachedStatus) {
std::string id, physicalId;
- status_t res = OK;
if (statusInfo.isPhysicalCameraStatus) {
- res = physicalCameraDeviceStatusChangeLocked(&id, &physicalId,
+ physicalCameraDeviceStatusChangeLocked(&id, &physicalId,
statusInfo.cameraId, statusInfo.physicalCameraId, statusInfo.status);
} else {
- res = cameraDeviceStatusChangeLocked(&id, statusInfo.cameraId, statusInfo.status);
- }
- if (res == OK) {
- cachedStatus->emplace_back(statusInfo.isPhysicalCameraStatus,
- id.c_str(), physicalId.c_str(), statusInfo.status);
+ cameraDeviceStatusChangeLocked(&id, statusInfo.cameraId, statusInfo.status);
}
}
mCachedStatus.clear();
mInitialized = true;
}
-
- // The cached status change callbacks cannot be fired directly from this
- // function, due to same-thread deadlock trying to acquire mInterfaceMutex
- // twice.
- if (listener != nullptr) {
- mInitialStatusCallbackFuture = std::async(std::launch::async,
- &CameraProviderManager::ProviderInfo::notifyInitialStatusChange, this,
- listener, std::move(cachedStatus));
- }
}
CameraProviderManager::ProviderInfo::DeviceInfo* CameraProviderManager::findDeviceInfoLocked(
@@ -1957,6 +1943,7 @@
for (auto it = mDevices.begin(); it != mDevices.end(); it++) {
if ((*it)->mId == id) {
mUniqueCameraIds.erase(id);
+ mUnavailablePhysicalCameras.erase(id);
if ((*it)->isAPI1Compatible()) {
mUniqueAPI1CompatibleCameraIds.erase(std::remove(
mUniqueAPI1CompatibleCameraIds.begin(),
@@ -2224,6 +2211,15 @@
return BAD_VALUE;
}
+ if (mUnavailablePhysicalCameras.count(cameraId) == 0) {
+ mUnavailablePhysicalCameras.emplace(cameraId, std::set<std::string>{});
+ }
+ if (newStatus != CameraDeviceStatus::PRESENT) {
+ mUnavailablePhysicalCameras[cameraId].insert(physicalCameraDeviceName);
+ } else {
+ mUnavailablePhysicalCameras[cameraId].erase(physicalCameraDeviceName);
+ }
+
*id = cameraId;
*physicalId = physicalCameraDeviceName.c_str();
return OK;
@@ -2282,20 +2278,6 @@
}
}
-void CameraProviderManager::ProviderInfo::notifyInitialStatusChange(
- sp<StatusListener> listener,
- std::unique_ptr<std::vector<CameraStatusInfoT>> cachedStatus) {
- for (auto& statusInfo : *cachedStatus) {
- if (statusInfo.isPhysicalCameraStatus) {
- listener->onDeviceStatusChanged(String8(statusInfo.cameraId.c_str()),
- String8(statusInfo.physicalCameraId.c_str()), statusInfo.status);
- } else {
- listener->onDeviceStatusChanged(
- String8(statusInfo.cameraId.c_str()), statusInfo.status);
- }
- }
-}
-
CameraProviderManager::ProviderInfo::DeviceInfo3::DeviceInfo3(const std::string& name,
const metadata_vendor_id_t tagId, const std::string &id,
uint16_t minorVersion,
@@ -2645,9 +2627,6 @@
}
CameraProviderManager::ProviderInfo::~ProviderInfo() {
- if (mInitialStatusCallbackFuture.valid()) {
- mInitialStatusCallbackFuture.wait();
- }
// Destruction of ProviderInfo is only supposed to happen when the respective
// CameraProvider interface dies, so do not unregister callbacks.
}